Blower unit



I May15,192s. 1,669,459 Y Y A. FEINBERG ET AL BLOWER UNIT Filed May 24, 192e;

Patented May 15, 1928.

UNITED STATES PATENT OFFICE.

ARCEIE FEINBERG, 0F CHICAGO, ILLINOIS, ANI) ISADORE M. HAL'VERSON, OF BOONE, IOWA, ASSIGNORS TO ARCTIC NU-AIR CORPORATION, 0F CHICAGO, ILLINOIS, A.

CORPORATION OF ILLINOIS.

BLOWER UNIT.

Application led May 24, 1926. Serial No. 111,090.

This invention relates to improvements in blower units and it consists of the matters hereinafter described and more' particularly pointed out in the appended claims.

One of the objects of the presentinvention is to provide a blower unit which comprises a casing' mounted on a base and has an air inlet and outletor discharge and is formed to provide a fan housing and an adjacent motor housing in which a motor is located for driving the fan.

Another object of the invention is to provide a unit of the vkind which yis portable in that it maybe readily placed in the desired location in a building with its air inlet in communication with the outside atmosphere, .for the best results for its intended purpose.

A still further object of the invention is to so connect the fan and motor casing that themotor casing is ventilated and the motor prevented from heating up, and at the same time provided a second or auxiliary air inlet to the fan casing to increase rits volumetric discharge.

These objects of the invention yas well as the many advantages thereof will more fully appear'as we proceed with our specification.

In the drawing Fig. 1 is a perspective View of a blower unit, embodying our invention, as viewed more .particularly from the front or discharge side thereof.

Fig 2 is a view in `elevation of the rear or inlet side of the unit, with parts broken away to more clearly show the interior construction.

Referring now in detail to that embodiment of the invention, illustrated in the accompanying drawing, 1 indicates as a. whole, a blower unit casing mounted on a horizontally disposed, elongated rectangular base board 2. The blowerunit casing includes upright front and rear walls 3 and 4, the rear wall 4 including an lextention 5 which is of a lesser height and merges by a rounded corner 6 into the end wall 7. The end wall 7 is spaced from the adjacent end of the front wall 3 and said end wall to gether with the rear wall extension, a ilat top wall portion 8 and said adjacent end of the kfront wall defines a discharge compartment 9 at one end of the casing which is open at its front. In the open front of the discharge compartment are provided spaced deiectors or louvers 10 which may be disposed either horizontally or vertically or a combination of the two. As shown in Fig. 1 said louvers are horizontally disposed but this is to be considered by way of illustration only.

The top portions of the front and rear wall are rounded and are connected by a top wall 1l, of spiral form, starting from the flat top. wall 8 and including an extension 12 which terminates at the base 2 as best shown in Fig. 2, to provide a fan compartment 13. At that end wall 6 is a short upright end 'wall 14 and associated therewith and hinged to the wall 11, as at 15 is a door 16 thus forming a motor compartment or housing 17. In the spiral extension wall 12 spaced a suitable distance below the hinge 15 is a split or slot 18 by means of which air may pass from the motor compartment or housing into the fan housing.

In the rear Wall l ofthe casing is an air inlet openino 19 of substantially large diameter and in ,the front wall 3, concentric with the air inlet opening 19 is a smaller or auX- iliary air inlet opening 20. vAssociated'with each inletopening and fixed to the associated rear andv front walls are bearing spiders 21 and 22, the hubs of which are coaxial vand in which is journalled a fan shaft 23. Fixed to said shaft by means of the arms or spokes 24C, (see Fig. 2.) is a fan or rotor 25 of the turbine or squirrel cage type. One end of the shaft 23 projects a suitable distance beyond the bearing spider 22 and secured to said shaft end, a short distance of the casing, opposite the end open web or spoke type.

In the compartment 17 is an electric'- motor 26 and one end of the armature shaft 27 thereof projects through an enlarged opening 28 in the front wall 3. To said end of the armature shaft is fixed a pulley 29, a belt 30 beinvtrained over said pulleys 29 and 25@1 for vriving the fan or rotor 25. The lower lap of the belt 30 is trained over a tightener pulley 31, carried by a pivoted arm 32 and connecting a stud 33 on said arm with a stud 34 on the front wall 3 is a contractile spring 35 by means of which the belt is maintained in proper tension. In

when the cover is in its the air therein and `bedischarged fas i scribed As air isdrawn .i ing With be open. `Also the rear Wall tot the casing, in line with the armature shaft of the motor 26, is a screen cover air inlet opening 36.

87 indicates a flanged cover member, which is hingedto the liront Wall of thecasing along a line parallel With and adjacent `the top lap oit the belt, so as to normally enclose the pulleys 25 and 29 belt 30 and associated belt tightener members, said cover being shown in its open position in l`ig. 1.`

Said cover includes apertured ears 38 Which closed position are adapted to be engaged by turn buttons 39 on the casing Wall 3 `for locking the cover in its closed position; p f

Assume Athat the unit as an entirety has been placed in position, with `its rear Wall adjacent an opening or a duct communicatthe outside atmosphere.` `A convenient place is upon a` Window sill, the associated sash of which may be assumed to assume that `the cover 37 is in` its closed position andthat the motor has been `connected up With aisuitable current conductor. The tan or rotor 25will be driven in the proper direction andspeed and will draw air in through the inlet opening 19 and will discharge it into the discharge compartment 9, Where its direction is changed by the rounded corner 6` thereof to pass out between the louvei's 10 into the room it is the rotation o'l: the ian, air from the motor compartment 17 is drawn through the slit or slot 18 in the spiral `Wall, extension 12 intothe "ian compartment, to mingle wtiith ethrough said slit or slot, other air from the outside atmos-` phere rushesthrough the screened opening 86, cooling the motor as the motor compartment.

it passes through A portion of the v air in the motor compartment may pass out through the opening Q8 in the Yfront Wall 3 of the casing into the duct deiined by the cover 37 AWhen itis closed, to pass into the "fan compartment 13 through the opening 2O y in said trontivall 3.` v Thus the cover When in its closed position not only Vfunctions as a cover tor the purpose beforeinentioned but also as a duct by ivhch auxiliary or secondi ary air is directed into the 'lan compartment.

Thus the motor although it is iii a substantially closed compartment is cooled so that it cannot become overheated when in opera-` tion. i

As is apparent scription,the blower unit is an integral unit, which may be positioned because of its portability to thebest advantage 'for its intended purpose and iills a long felt `Want for proper ventilation and cooling of small theaters or i other places oi'public gathering, at a reasonable cost. It is compact, the moving parts are enclosed and it may be readily shifted desired to ventilate or cool. In

from the foregoing de-` from place to place and' this eliminates the extra expense of the cost of a fanroom.

While in i describing our invention, we l have referred to certain details of mechanical construction as Well as form and arrangekmentof the yparts thereof, We "donot Wish to be limited thereto except j as ffma'y be pointed outin the lappendedclaims.V

We claim as our invention:

i 1. A blower ,embodyingthereinia casing formed to provide motor one end, a discharge compartment at the .other end and anintermediate fan compart-y ment, said motor and fan compartments each having separate air-inlets in one side ofthe casinga motor anda `fan in said*` y 2. A blower embodyingitherein abase, a

means ,onV the casing thereon o'rrried ,to provide a motor i compartment at one end, a discharge compartment .at the other lend and an' interme-l i diate fan compartment, said motorand ian compartments having air inlets in one, lside of the casing and the discharge compartment having anoutletin the other Iside of the casing, a motor and a tan in said motor endian compartments, means on the `other side ofsaid casing means, there being openings in said other side of said casing AWithin the cover -which cover acts asa con uitconnectin y,said ymotor and lfan,compartmentsp on said other side of the casing.; ,y i 3. A blowerpembodying therein, abase,

`for driving the fan ro'm` the. motor, and a cover for" enclosing; said f v lane ofthe a casing thereon formed to provide amotor t i compartment athene end, a discharge compartment at ythe other end and anin'teimedifate fan casingp a motor in said motor ,cornpartment, a tannin said tan compartment,

a part of said casingbetween lsaid motor Vand i tan compartments having an opening there? said motor and `fan.compartments hav in, ing air inlets in one sideof the casing, and means associated `With the other side of the casing for drivingthe fan from themotor, r

4. A blovverem formed to provide'a `fan compartment anda motor compartment, said fancompartment having an air inlet and outlet and said motor compartment having an airfinlet, a fan and a motor in'said respective compartments,` means for driving said fan from the motor and a cover for enclosing said means, saidrco'ver forming a duct connecting said dying therein a baseand ya casing mountedfthereon,-`s`aid casing being fan compartment and motor compartment, A

said fan acting"` to establish a circulation of air through thernotorcompartment. p

5. A` blower embodying t erein a base and compartment at f i a casing mounted thereon, said casing being formed to provide a fan compartment and a motor compartment, said fan compartment having an air inlet and outlet and said motor compartment having an air inlet, said compartments havingk an air passage between them, a fan and a motor in said respective compartments, means for driving said fan from the motor, and a. cover for said means and providing a duct leading from said motor compartment to said :tan compartment, said fan acting to establish a circulation of air through the motor compartment.

6. A blower embodying therein a base and a Casing mounted thereon, said casing being formed to provide a fan compartment and a motor compartment, said fan compartment having more than one air inlet and an outlet and said motor compartment having an air inlet, a fan and a motor in the respective compartments, means outside the casing for driving the fan from the motor, a cover adapted to enclose said means and forming a duct connecting the motor compartment and one of the fan inlets whereby said fan acts to cause a circulation of air through the motor compartment.

7. A blower .embodying therein, a base and a casing mounted thereon and formed to provide a motor ycompartment at one end, a dis` charge compartment having an outlet, at the other end, and an intermediate fan compartment, having an air inlet and communicating With said discharge compartment, a fan and a motor in said fan and motor compartments, which motor compartment has an air inlet, means outside the casing for driving the fan from the motor and including pulleys and belts, and a cover on said casing to enclose said pulleys and belts and forming `a conduit connecting said fan and motor compartments.

ln testimony whereof, I have hereunto set my hand this 21st day of April, 1926.

ARCE-HE FEINBERG.

In testimony whereof, I have hereunto set my hand this 18 day of May, 1926.

ISADORE M. HALVERSON. 

